Complete an open todo on pickletools -- add a pickle optimizer.
diff --git a/Misc/NEWS b/Misc/NEWS
index 96ea7d7..c519ba6 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -400,6 +400,9 @@
 Library
 -------
 
+- The pickletools module now provides an optimize() function
+  that eliminates unused PUT opcodes from a pickle string.
+
 - #2021: Allow tempfile.NamedTemporaryFile and SpooledTemporaryFile
   to be used in with statements by correctly supporting the context
   management protocol.